I just wished the company could state that in clear words somewhere - but I guess, any company that puts out devices on the market, with PSUs so hot you can boil water on, probably does not want to clearly say that you have to pay extra for a JTAG cable for restoring factory settings ...

Given your terse description, it appears you haven't updated the bootloader. So can you not boot an alternative OS from somewhere else and, using that, replace the kernel and rootfs on your Guruplug's internal flash?

You don't really want to do a factory reset... that's what got you into that mess in the first place. It's a latent bug on the version of Debian they used on some of the plugs. Instead, just learn how to unbrick your plug. I went through the exact same thing.

You don't really want to do a factory reset... that's what got you into that mess in the first place. It's a latent bug on the version of Debian they used on some of the plugs. Instead, just learn how to unbrick your plug. I went through the exact same thing.